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brctl: simplify str_to_jiffies()

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function                                             old     new   delta
write_uint                                             -      96     +96
brctl_main                                           721     678     -43
write_ulong                                           96       -     -96
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 96/-139)           Total: -43 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2019-04-13 14:17:55 +02:00
parent dc1b2d4356
commit 9435608804
1 changed files with 20 additions and 48 deletions
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68
networking/brctl.c
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@ -66,9 +66,9 @@
//usage: "\n setpathcost BRIDGE IFACE COST Set path cost"
//usage: )
// Not yet implemented:
// hairpin BRIDGE IFACE on|off Hairpin on/off
// showmacs BRIDGE List mac addrs
// showstp BRIDGE Show stp info
// hairpin BRIDGE IFACE on|off Hairpin on/off
// showmacs BRIDGE List mac addrs
// showstp BRIDGE Show stp info
#include "libbb.h"
#include "common_bufsiz.h"
@ -88,51 +88,23 @@
# define SIOCBRDELIF BRCTL_DEL_IF
#endif
/* Use internal number parsing and not the "exact" conversion. */
/* #define BRCTL_USE_INTERNAL 0 */ /* use exact conversion */
#define BRCTL_USE_INTERNAL 1
#if ENABLE_FEATURE_BRCTL_FANCY
/* FIXME: These 4 funcs are not really clean and could be improved */
static ALWAYS_INLINE void bb_strtotimeval(struct timeval *tv,
const char *time_str)
static unsigned str_to_jiffies(const char *time_str)
{
double secs;
# if BRCTL_USE_INTERNAL
double dd;
char *endptr;
secs = /*bb_*/strtod(time_str, &endptr);
if (endptr == time_str)
# else
if (sscanf(time_str, "%lf", &secs) != 1)
# endif
dd = /*bb_*/strtod(time_str, &endptr);
if (endptr == time_str || dd < 0)
bb_error_msg_and_die(bb_msg_invalid_arg_to, time_str, "timespec");
tv->tv_sec = secs;
tv->tv_usec = 1000000 * (secs - tv->tv_sec);
}
static ALWAYS_INLINE unsigned long tv_to_jiffies(const struct timeval *tv)
{
unsigned long long jif;
dd *= 100;
/* For purposes of brctl,
* capping SECONDS by ~20 million seconds is quite enough:
*/
if (dd > INT_MAX)
dd = INT_MAX;
jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
return jif/10000;
}
# if 0
static void jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
{
unsigned long long tvusec;
tvusec = 10000ULL*jiffies;
tv->tv_sec = tvusec/1000000;
tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
}
# endif
static unsigned long str_to_jiffies(const char *time_str)
{
struct timeval tv;
bb_strtotimeval(&tv, time_str);
return tv_to_jiffies(&tv);
return dd;
}
#endif
@ -208,7 +180,7 @@ static int show_bridge(const char *name, int need_hdr)
return 0;
}
static void write_ulong(const char *name, const char *leaf, unsigned long val)
static void write_uint(const char *name, const char *leaf, unsigned val)
{
char pathbuf[IFNAMSIZ + sizeof("/bridge/bridge_id") + 32];
int fd, n;
@ -219,7 +191,7 @@ static void write_ulong(const char *name, const char *leaf, unsigned long val)
sprintf(pathbuf, "%.*s/%s", (int)IFNAMSIZ, name, leaf);
#endif
fd = xopen(pathbuf, O_WRONLY);
n = sprintf(filedata, "%lu\n", val);
n = sprintf(filedata, "%u\n", val);
if (write(fd, filedata, n) < 0)
bb_simple_perror_msg_and_die(name);
close(fd);
@ -338,7 +310,7 @@ int brctl_main(int argc UNUSED_PARAM, char **argv)
if (onoff < 0)
bb_error_msg_and_die(bb_msg_invalid_arg_to, *argv, applet_name);
onoff = (unsigned)onoff / 4;
write_ulong(br, "bridge/stp_state", onoff);
write_uint(br, "bridge/stp_state", onoff);
//goto done_next_argv;
return EXIT_SUCCESS;
}
@ -349,7 +321,7 @@ int brctl_main(int argc UNUSED_PARAM, char **argv)
* sethello BR N: "N*100\n" to /sys/class/net/BR/bridge/hello_time
* setmaxage BR N: "N*100\n" to /sys/class/net/BR/bridge/max_age
*/
write_ulong(br,
write_uint(br,
nth_string(
"bridge/ageing_time" "\0" /* ARG_setageing */
"bridge/forward_delay""\0" /* ARG_setfd */
@ -364,7 +336,7 @@ int brctl_main(int argc UNUSED_PARAM, char **argv)
}
if (key == ARG_setbridgeprio) {
write_ulong(br, "bridge/priority", xatoi_positive(*argv));
write_uint(br, "bridge/priority", xatoi_positive(*argv));
//goto done_next_argv;
return EXIT_SUCCESS;
}
@ -380,7 +352,7 @@ int brctl_main(int argc UNUSED_PARAM, char **argv)
* "setportprio BR PORT N" writes "N\n" to
* /sys/class/net/PORT/brport/priority
*/
write_ulong(argv[0],
write_uint(argv[0],
nth_string(
"brport/path_cost" "\0" /* ARG_setpathcost */
"brport/priority", /* ARG_setportprio */